import { NextRequest, NextResponse } from "next/server"
import { AuthError } from "next-auth"

import { signIn } from "@/auth"
import { badRequest } from "@/server/errors/next"

import type { Lang } from "@/constants/languages"

export async function GET(
  request: NextRequest,
  context: { params: { lang: Lang } }
) {
  const redirectTo =
    request.headers.get("x-redirect-to") ||
    request.nextUrl.searchParams.get("redirectTo") ||
    undefined

  try {
    /**
     * Passing `redirect: false` to `signIn` will return the URL instead of
     * automatically redirecting to it inside of `signIn`.
     * https://github.com/nextauthjs/next-auth/blob/3c035ec/packages/next-auth/src/lib/actions.ts#L76
     */
    const url = await signIn(
      "curity",
      {
        redirectTo,
        redirect: false,
      },
      {
        ui_locales: context.params.lang,
      }
    )

    if (url) {
      return NextResponse.redirect(url)
    }
  } catch (error) {
    if (error instanceof AuthError) {
      console.log({ signInAuthError: error })
    } else {
      console.log({ signInError: error })
    }
  }

  return badRequest()
}